<li><%= link_to image_tag(item.image_name.blank? ? "no_image.png":"proimages/#{item.image_name.sub(".","_s.")}",:align=>"center"),
  product_path(item) %>
<p><%= number_to_currency(item.now_price, :unit => "元", :separator => ",", :delimiter => "", :format => "%n %u") %></p>
  <p>
<%= link_to truncate(item.name,:length=>18), product_path(item) %></p>
</li>